Koert, Not sure what you mean by "results can be merged between groups". UDAF should be used to aggregated records by group. Why need to merge between groups?
Can you give some examples of what kind of query you'd like to run? 2011/8/30 Koert Kuipers <ko...@tresata.com> > If i run my own UDAF with group by, can i be sure that a single UDAF > instance initialized once will process all members in a group? Or should i > code so as to take into account the situation where even within a group > multiple UDAFs could run, and i would have to deal with terminatePartial() > and merge() even within a group? > My problem is that my results within a group are not easily merged, but > between groups they are. >
